Our business currently has our Outlook + 365 provided thru GoDaddy. We are currently expanding to have about 30 users and were curious about the most cost-effective solution for this. We have looked into Office 365 F1 but we really only need the custom domain email solution, not the file storage and sharing, meetings, and instant messaging that that plan offers. Is it possible there is a plan out there that only offers custom branded emails? (such as firstname.lastname@example.org)
That's a question you should be addressing to GoDaddy's support. If you are using the "standard" Office 365 suite provided directly by Microsoft, then you can get the Exchange Online standalone plan, which only features email.